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The Sebring 12 Hours-winning ORECA organization from France is designing and developing an all-new LMP1 prototype for the privateer Rebellion Racing team ahead of the 2014 World Endurance Championship.

The Anglo-Swiss team, which is contesting the American Le Mans Series this season alongside its WEC campaign, has commissioned an all-new car to be built to the 2014 LMP1 rulebook from ORECA, which won at Sebring in 2011 running a semi-works Peugeot 908 HDi. The new car, which replaces its fleet of Lola-Toyota B12/60 that become obsolete at the end of the current season, will be known as the Rebellion R-One.

The R-One, which will be powered by a Toyota engine, will be the first ground-up prototype design to be built by ORECA. Its LMP1, P2 and one-make LMPC machines have all based on a chassis designed by Courage Competition, which it took over in September 2007.

"We want to build upon our success and reach an even higher level,” said Rebellion Racing team manager Bart Hayden. “We have chosen ORECA to develop and build the Rebellion R-One because they have a strong record of success and they have produced many successful prototype cars."

ORECA boss Hugues de Chaunac said that Rebellion's choice of his company to develop a new LMP1 was a major accolade.

"We are happy and proud because it means that we are now considered as one of the major racing car constructors in the world," he said. "Rebellion had some different choices, but they picked us after our success in LMP2 [with the ORECA 03]."

Rebellion will continue its relationship with Toyota as an engine supplier, which began in 2011, into the new project.

A final decision on a powerplant has yet to be made, but de Chaunac said that it is likely to be a version of the Super GT-based 3.4-litre V8 the team currently uses.

"Toyota started work on adapting the engine to the new regulations some weeks ago and the first indications are encouraging," he said.

Hayden said that it was "95 percent certain" that the Rebellion R-One would not be equipped with energy-retrieval systems next season and would instead take advantage of a larger fuel allocation and lower minimum weight afforded to non-hybrids run by privateers in the new energy-based formula.

"The Automobile Club de l'Ouest [which runs the 24 Hours of Le Mans and promotes the WEC] has recognized that privateers have a place in P1," Hayden said. "There could be a window of opportunity for us next year, which is part of the attraction of this program."

Work started on the Rebellion R-One in April and the team hopes to have the car on the track by March.

"We know that time is very short," he said. "Normally for a project like this, you need 14 to 15 months, but will be doing it in less than 12 months."

The design team is being led by Christophe Guibbal, manager of ORECA's drawing office, rather than technical director David Flourry. De Chaunac explained that Flourry would concentrate on ORECA's involvement in the factory Toyota WEC program.